*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar007007
Apr01547000485
May2106654650011132
Jun8215862640021858
Jul34784421630010041
Aug1471451001472
Sep032659002662
Oct1382900833
Nov01210022
Dec001003949
Total5940124834005248575